Patent US3247411A successfully refreshed from Google Patents.
US3247411A
Expired / Lapsed
US
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Post-deflection color purity correcting magnet system for a color tv cathode ray tube
Assignee: RCA Corp
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Filing: 1962-07-09
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Granted: 1966-04-19
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Expires: 1982-07-09
Abstract
No abstract record available.
Inventors
- 👤 Jerrold K Kratz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:16
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/70; H01J29/701; H01J29/702; H01J29/703
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
75 words
A PERMANENT MAGNET RING COMPRISING THE ASSEMBLY OF: A PAIR OF RING ELEMENTS OF MAGNETIC MATERIAL AND OF GENERALLY SEMI-CIRCULAR CONFIGURATION, EACH OF SAID RING ELEMENTS BEING MAGNETIZED ALONG ITS LONG DIMENSION, THE ORIENTATION OF SAID RING ELEMENTS IN SAID ASSEMBLY BEING SUCH AS TO ADJOIN ELEMENT ENDS OF LIKE POLARITY, SAID ELEMENT ENDS HAVING A SMALLER CROSS-SECTIONAL AREA THAN PORTIONS OF SAID ELEMENTS INTERMEDIATE SAID ENDS, AND MEANS FOR SECURING SAID RING ELEMENTS TOGETHER.
References Cited (Backward Citations)
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US2963607A
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US2941102A
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FR1239723A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |